A.R.D.F. Fox hunting Arduino training controler

const int buzzerPin = 12;
const int ledPin = 13;
const int unitDuration = 200; // Base time unit in milliseconds

String words[] = {"MOE", "MOI", "MOS", "MOH", "MO5"};

void setup() {
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  for (int i = 0; i < 5; i++) {
    unsigned long startTime = millis();
    while (millis() - startTime < 60000) { // Run for 1 minute
      transmitWord(words[i]);
    }
  }
}

void transmitWord(String word) {
  for (int i = 0; i < word.length(); i++) {
    char character = word.charAt(i);
    morseSymbol(character);
    if (i < word.length() - 1) delay(unitDuration * 3); // Inter-letter space
  }
  delay(unitDuration * 7); // Inter-word space
}

void morseSymbol(char c) {
  String morseCode = getMorseCode(c);
  for (int i = 0; i < morseCode.length(); i++) {
    digitalWrite(buzzerPin, HIGH);
    digitalWrite(ledPin, HIGH);
    int duration = (morseCode[i] == '.') ? unitDuration : unitDuration * 3;
    delay(duration);
    digitalWrite(buzzerPin, LOW);
    digitalWrite(ledPin, LOW);
    if (i < morseCode.length() - 1) delay(unitDuration); // Inter-symbol space
  }
}

String getMorseCode(char c) {
  switch (toupper(c)) {
    case 'M': return "--";
    case 'O': return "---";
    case 'E': return ".";
    case 'I': return "..";
    case 'S': return "...";
    case 'H': return "....";
    case '5': return ".....";
    default: return "";
  }
}